Zhulinniao Qingluan Z4 are beautifully crafted IEMs with a premium unboxing experience, metal housing, and balanced sound signature. Excellent for vocal-centric genres. However, they may sound slightly quiet on low-powered sources and might not satisfy bassheads.
Specifications
Type: In-ear monitors (IEM)
Driver: 10mm external magnetic high-performance dynamic driver (N52 neodymium magnets)
Diaphragm material: Diamond-Like Carbon (DLC)
Frequency response: 20–20,000 Hz
Sensitivity: 106 dB
Impedance: 32 Ω
Connector: 0.78mm 2-pin interface
Weight per earbud: ~14g
Build Quality & Design
The Z4 features a full metal shell, and it feels incredibly solid and premium in the hand. You can tell this isn’t a budget set just by the first touch.
The ergonomic shape makes for a very secure and comfortable fit. I’ve spent several hours at a time listening with them and never experienced any discomfort — a major win for long sessions.
The included cable is also impressive — braided, durable, and soft, with solid connector.
Unboxing & Accessories
Z4 comes with an excellent set of accessories:
A leather-like protective storage case
Three pairs of silicone tips (S/M/L)
An extra pair of catheters
High-quality braided cable
The IEMs themselves
The storage case is worth highlighting — very tactile, well-padded, and truly elevates the unboxing experience.
Testing Setup & First Impressions
I tested the Z4 using two sources:
- A PC with a 3.5mm output
- A smartphone via USB-C dongle
It's important to note that the volume output seemed lower compared to other IEMs I’ve tested. This could be due to the combination of impedance and sensitivity, especially when powered by a phone without a dedicated DAC.
Sound Impressions
Z4 delivers a refined, clean, and smooth sound. Thanks to their exclusive patented acoustic structure (Patent No. 2023201865817), they offer:
- A clean background
- Natural, three-dimensional vocals
- Balanced tonality
- Tamed upper-mids and treble that avoid harshness
On the downside, I found the bass to be slightly underwhelming, particularly for genres that rely on sub-bass impact. But for vocal-driven music like pop or acoustic, the Z4 shines.
Frequency Response
Here’s the FR graph from my unit:
It reflects what I heard — a gentle V-shape with a slight dip in the bass and smooth, airy treble.
Pros & Cons
Pros:
- Premium metal build
- Great packaging and case
- Comfortable for long listening sessions
- Clean mids and natural vocals
- Balanced sound with no sibilance
- High-quality accessories and cable
Cons:
– Lacks deep sub-bass impact
– Lower volume on low-powered sources
– Not ideal for bass-heavy genres
Final Thoughts
The Zhulinniao Qingluan Z4 stands out with its exceptional build quality, great ergonomics, and mature sound tuning. While it might not satisfy bassheads or those who need higher volume from mobile sources, it’s a strong contender for those who value clarity, comfort, and premium presentation.
Specifications
Type: In-ear monitors (IEM)
Driver: 10mm external magnetic high-performance dynamic driver (N52 neodymium magnets)
Diaphragm material: Diamond-Like Carbon (DLC)
Frequency response: 20–20,000 Hz
Sensitivity: 106 dB
Impedance: 32 Ω
Connector: 0.78mm 2-pin interface
Weight per earbud: ~14g
Build Quality & Design
The Z4 features a full metal shell, and it feels incredibly solid and premium in the hand. You can tell this isn’t a budget set just by the first touch.
The ergonomic shape makes for a very secure and comfortable fit. I’ve spent several hours at a time listening with them and never experienced any discomfort — a major win for long sessions.
The included cable is also impressive — braided, durable, and soft, with solid connector.
Unboxing & Accessories
Z4 comes with an excellent set of accessories:
A leather-like protective storage case
Three pairs of silicone tips (S/M/L)
An extra pair of catheters
High-quality braided cable
The IEMs themselves
The storage case is worth highlighting — very tactile, well-padded, and truly elevates the unboxing experience.
Testing Setup & First Impressions
I tested the Z4 using two sources:
- A PC with a 3.5mm output
- A smartphone via USB-C dongle
It's important to note that the volume output seemed lower compared to other IEMs I’ve tested. This could be due to the combination of impedance and sensitivity, especially when powered by a phone without a dedicated DAC.
Sound Impressions
Z4 delivers a refined, clean, and smooth sound. Thanks to their exclusive patented acoustic structure (Patent No. 2023201865817), they offer:
- A clean background
- Natural, three-dimensional vocals
- Balanced tonality
- Tamed upper-mids and treble that avoid harshness
On the downside, I found the bass to be slightly underwhelming, particularly for genres that rely on sub-bass impact. But for vocal-driven music like pop or acoustic, the Z4 shines.
Frequency Response
Here’s the FR graph from my unit:
It reflects what I heard — a gentle V-shape with a slight dip in the bass and smooth, airy treble.
Pros & Cons
Pros:
- Premium metal build
- Great packaging and case
- Comfortable for long listening sessions
- Clean mids and natural vocals
- Balanced sound with no sibilance
- High-quality accessories and cable
Cons:
– Lacks deep sub-bass impact
– Lower volume on low-powered sources
– Not ideal for bass-heavy genres
Final Thoughts
The Zhulinniao Qingluan Z4 stands out with its exceptional build quality, great ergonomics, and mature sound tuning. While it might not satisfy bassheads or those who need higher volume from mobile sources, it’s a strong contender for those who value clarity, comfort, and premium presentation.
. Great review, and a impressive first post! 
